Homocysteine is derived primarily from animal protein.
Vitrinites are derived primarily from cell walls and woody tissues.
Eastern Kentucky soils, derived primarily from sandstone, are less fertile.
Source: Data derived primarily from A.F. Cook in NASA SP-319 (1973).
The glassy material in most bituminous coal is vitrinite, composed of macerals derived primarily from woody plant tissue.
The rounded forms and exaggerated horizontal strokes that characterize the taʿlīq letters were derived primarily from the riqāʿ script.
Encouraged especially by the quality of a commercial cheese substitute derived primarily from the cassava root, the self-described "vegan foodie" persuaded his father, Andy, to start offering dairy-free pizzas last summer.
Public income is derived primarily from taxes on real estate, personal income, and capital as well as through customs and excise duties.
Most energy for domestic use in rural areas is derived primarily from firewood and charcoal; this has strained the remaining wood resources in the country.
The significantly lower values are a result of reactions with nitrogen- and sulfur-bearing gaseous atmospheric components derived primarily from fossil-fuel burning sources.
Although derived primarily from the remains of a highly centralized imperial culture, the Romanesque flowered during a period of fragmented and unstable governments.
